August kohlhofeb



UNITED STATES PATENT OFFICE.

AUGUST KOHLHOFER, OF MUNICH, BAVARIA.

FU RNACE-GRATE.

SPECIFICATION forming part of Letters Patent No. 225,146, dated March 2,1880. Application filed January 28, 1880. Patented in Germany, February17, 1878.

To all whom it may concern Be it known that I, AUGUST KOHLHOFER, ofMunich, in the Kingdom of Bavaria, engineer, have invented anImprovement in Fur- Dace-Grates; and I do hereby declare that thefollowing description, taken in connection with the accompanyingdrawings, hereinafter referred to, forms a full and exact specificationof the same, wherein I have set forth the nature and principles of mysaid improvement, by which my invention may be distinguished from othersof a similar class, together with such parts as I claim and desire tosecure by Letters Patent-that is to say:

According to my invention furnace-grates are constructed of a number ofseparate furnacebars, by preference of moderate length resting withtheir ends on supports, between which each bar has a V-shaped projectionextending downward a considerable distance, by preference in the form ofan open loop. At the lowest point each of these projections is embracedloosely by a separate loop on a transverse bar, which consequentlyconnects.

all the bars in one and the same row loosely together.

Thus, by imparting a reciprocating motion to the transverse bar by anyconvenient means, all the furnace-bars connected thereto will be rockedseparately on their supports, and consequently the clinkers and ashescollecting thereon will be effectually broken up and removed.

On the aceompanying drawings, shows a longitudinal section of afurnace-grate constructed according to my invention. Fig. 2 shows aplan. Fig. 3 shows a transverse section on line X X, Fig. 1; and Fig. 4shows a view of one of the transverse bearers.

The bars a a rest with their ends on transverse bearers b b, thecontiguous ends of two lengths of barsbeing cranked, as shown, so as tooverlap each other, thus enabling the two ends to be supported by thethin upper edge of one and the same bearer.

The V-shaped extension to of each bar,formed, by preference, as an openloop, as shown, is embraced loosely by a loop on a transverse bar, 0, bymeans of which bar all the furnacebars of one row are consequentlyconnected Figure 1 together and prevented from being displaced instoking.

The loops of the transverse bars may conveniently be formed by acast-metal bar, 0, having comblike projections 0 the spaces betweenwhich are closed at bottom by plates 0 secured byscrews, as shown.

Thus it will be seen that by imparting a reciprocating longitudinalmotion to the transverse bars a rocking motion will be impartedsimultaneously to all the furnace-bars upon their supports.

Such reciprocating motion may be convenientlyimparted to the transversebars by means of a longitudinal shaft, d, carried in bearings e 0, fixedto the transverse bearers b, and having tappets f secured thereon byset-screws, as

shown, which tappets enter between two of the loops on the bar 0, orbetween the V-projeetions of two contiguous bars, so that by impartingto the shaft 01 a rocking motion in its bearings by means of ahand-lever, g, outside the furnace, the desired reciprocating motionwill be imparted to the transverse bars and furmace-bars.

The shaft 01 is held in position in its bearing by means of loosecollars h, secured by setscrews.

The transverse bearers being formed with large openings and theV-projections of the grate-bars being also open, it will be seen thatthe air can pass freely to the under side of and through the grate.

Having thus described the nature of my invention and the best means Iknow of carrying it out in practice, I hereby claim 1. A furnace-gratewherein each furnacebar is supported at its ends upon stationary barsand has a deep extension on its under side, by which it is connectedloosely to a loop on a transverse longitudinally-reciprocatin g bar,that serves both to tie all the bars of one row together and to impartto them separately a rocking motion on their bearings, substantially asand for the purposes herein described.

2. A furnace-bar, at, having a loop-shaped extension, a, on its underside, adapted for connection to a transverse bar for imparting a rockingmotion thereto, substantially as set forth.

3. The combination of the furnace-bars a to this specification, in thepresence of two subwith V-sheped extension to, looped transversescribing witnesses, this 22d day of October, A. bar 0, and longitudinalrockingshaft cl, with D. 1879. tnppets f, for imparting a rocking motionto the 5 furnace-bars, as and for the purposes herein de- Witnessesscribed. OI-IAs. D. ABEL,

In testimony whereofI have signed my name H. E. HOPKINS.

AUGUST KOHLHOFER.

